Vaude's Wizard 18+4 is a versatile and comfortable backpack for day hikes as well as daily life and travel. The Shifting Back Length adjustment system allows you to adjust the bag to your size to improve carrying comfort. To make this bag comfortable to wear throughout your outing, the back is ventilated thanks to the Aeroflex Control system, which allows you to change the ventilation space to choose more or less ventilation or a load closer or further away from the back. The ErgoShape shoulder straps guarantee perfect freedom of movement. Backpack Vaude ---Wizard 18+4 Avocado